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GB/T 33592-2017 (GB/T33592-2017)

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GB/T 33592-2017: PDF in English (GBT 33592-2017)
GB 33592-2017
GB
NATIONAL STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 29.240.01
F 20
Specification of operation and controlling for
distributed resources connected to power grid
ISSUED ON. MAY 12, 2017
IMPLEMENTED ON. DECEMBER 01, 2017
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
3. No action is required - Full-copy of this standard will be automatically &
immediately delivered to your EMAIL address in 0~60 minutes.
Table of contents
Foreword ... 3 
1 Scope ... 4 
2 Normative references ... 4 
3 Terms and definitions ... 5 
4 Basic requirements ... 5 
5 Grid-on/grid-off control ... 6 
6 Active power control ... 8 
7 Reactive power regulation ... 8 
8 Power grid abnormal response ... 10 
9 Power quality monitoring ... 11 
10 Communication and automation ... 12 
11 Relay protection and safety automatic device ... 13 
12 Lightning protection and grounding ... 14 
Foreword
This standard was drafted in accordance with the rules given in GB/T
1.1-2009.
Please note that some of the contents of this document may involve patents.
The issuer of this document does not assume responsibility for the
identification of these patents.
This standard was proposed by AND shall be under the jurisdiction of the
China Electricity Council.
The drafting organizations of this standard. State Grid Corporation, China
Electric Power Research Institute, State Grid Zhejiang Electric Power
Company, State Grid Jiangsu Electric Power Company.
The main drafters of this standard. Liu Haitao, Hou Yiming, Yu Hui, Sheng
Wanxing, Su Jian, Wu Ming, Li Yang, Liu Yuanhong, Li Rui, Zhao Bo, Li Peng,
Li Qiang.
Specification of operation and controlling for
distributed resources connected to power grid
1 Scope
This standard specifies the operation and controlling requirements for the
distributed resources connected to power grid in such aspects as
on-grid/off-grid control, active power control, reactive voltage regulation, power
grid abnormal response, power quality monitoring, communication and
automation, relay protection and safety automatic device, and lightning
protection and grounding.
This standard is suitable for the operation and controlling of the newly built,
reconstructed, and extended distributed resources which are connected to the
35 kV and below voltage level power grid.
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) are applicable to this Standard.
GB/T 12325 Power quality – Deviation of supply voltage
GB/T 12326 Power quality – Power fluctuation and flicker
GB 14050 Types and safety technical requirements of system earthing
GB/T 14549 Quality of electric energy supply – Harmonics in public supply
network
GB/T 15945 Power quality – Frequency deviation for power system
GB 26859 Safety code of electric power industry – Part of electric lines
GB 26860 Safety code of electric power industry – Electric part of power
plants and transformers
GB 50057 Design code for protection of structures against lightning
GB/T 50064 Code for design of overvoltage protection and insulation
coordination for AC electrical installations
GB 50065 Code for grounding design of AC electrical installations
GB/T 33593-2017 Technical requirements for grid connection of distributed
resources
NB/T 33011 Technical specification for distributed resources connected to
power grid
NB/T 33015 Technical guideline for electrochemical energy storage system
interconnecting with distribution network
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Point of interconnection
As for the distributed resources which are connected to the grid through the
transformer, it refers to the bus or node at the power grid side of the
transformer. As for the distributed resources which are connected to the
power grid not through the transformer, it refers to the output collection point
of the distributed resources.
3.2
Point of common coupling
It refers to the connection through which the user accesses to the public
power grid.
3.3
Unintentional islanding
It refers to the unplanned and uncontrolled occurrence of distributed power
islanding.
Note. The distributed resource islanding phenomenon refers to the
self-independent operation which is composed of the distributed resources,
local loads, and monitoring and controlling device which is independent of
the public power grid.
4 Basic requirements
4.1 The distributed resources connected to the power grid shall have the
testing report which is issued by the unit or department having corresponding
qualifications, the testing items and testing methods shall comply with the
provisions of NB/T 33011, AND the test results shall comply with the
requirements of GB/T 33593-2017.
4.2 Before the distributed resources connected into the power grid, its
operation management party and the power grid enterprise shall, in
accordance with the principles of the unified scheduling and leveled
7.6 As for the distributed resources connected to the 10 (6) kV ~ 35 kV user
internal power grid AND transmitted electricity to the public power grid, it is
preferable for it to have the reactive voltage control function. Under the
conditions that the distributed resource satisfies the reactive output range and
the public connection point power factor limits, the power factor and voltage at
its power grid connection point are controlled; meanwhile, it is preferable to
accept the reactive order from the power grid scheduling institute, AND its
regulation method, reference voltage, voltage difference regulation rate, and
power factor, etc., shall follow the requirements of the scheduling agreement.
7.7 As for the distributed resources connected to the 10 (6) kV ~ 35 kV public
power grid, it shall participate in the power grid reactive voltage regulation
within its reactive output range, AND it shall have the function of accepting the
reactive voltage control order from the power grid scheduling institute. Under
the conditions of satisfying with the distributed resource reactive output range
AND that the voltage at the power grid connection point is qualified, the power
grid scheduling unit shall perform the reactive voltage control against the
distributed resources in accordance with the scheduling agreement.
8 Power grid abnormal response
8.1 As for the distributed resource directly connected to the public power grid
through the 10 (6) kV voltage level AND the distributed resource connected to
the power grid through the 35 kV voltage level, it shall have the low voltage ride
through capability, AND the low voltage ride through amplitude and time shall
comply with the requirements of GB/T 33593 -2017.
8.2 As for the distributed resource directly connected to the public power grid
through the 10 (6) kV voltage level AND the distributed resource connected to
power grid through the 35 kV voltage level, when the power grid connection
point voltage U is above 110% of the rated voltage, it shall operate in the
following methods.
a) 110% UN < U < 135% UN, the distributed resource shall be disconnected
from the power grid within 2 s;
b) 135% UN ≤ U, the distributed resource shall be disconnected from the
power grid within 0.2 s.
8.3 As for the distributed resource connected to the 220/380 V power grid AND
the distributed resource connected to the user side through the 10 (6) kV
voltage level, when the power grid connection point voltage U is abnormal, it
shall operate in accordance with the methods as listed in Table 1; AND in case
of abnormality of any phase of voltage in the three-phase system, it shall also
operate in accordance with this method.
Table 1 -- Voltage abnormal response requirements
Voltage at power grid connection point Requirements
U < 50% UN The distributed resource shall be disconnected from the power
upload it regularly; as for the distributed resources connected to the 220/380V
power grid, it shall record the power quality indicator statistical value every 10
min, AND it shall store at least 1 month of power quality data.
9.2 After the distributed resource connected to the power grid, when the power
quality at the public connection point does not comply with the requirements of
GB/T 33593-2017, it shall produce alarm information; as for the distributed
resource connected to the 10 (6) kV ~ 35 kV power grid, its...
......
 
(Above excerpt was released on 2017-09-15, modified on 2022-02-20, translated/reviewed by: Wayne Zheng et al.)
Source: https://www.chinesestandard.net/PDF.aspx/GBT33592-2017